diff --git a/runtime/compiler/spotbugs.vim b/runtime/compiler/spotbugs.vim
index 10d164b..8ed45f8 100644
--- a/runtime/compiler/spotbugs.vim
+++ b/runtime/compiler/spotbugs.vim
@@ -1,7 +1,7 @@
 " Vim compiler file
 " Compiler:     Spotbugs (Java static checker; needs javac compiled classes)
-" Maintainer:   @konfekt and @zzzyxwvut
-" Last Change:  2024 Dec 14
+" Maintainers:  @konfekt and @zzzyxwvut
+" Last Change:  2024 Dec 20
 
 if exists('g:current_compiler') || bufname() !~# '\.java\=$' || wordcount().chars < 9
   finish
diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
index 1cd075f..b6d7950 100644
--- a/runtime/doc/quickfix.txt
+++ b/runtime/doc/quickfix.txt
@@ -1,4 +1,4 @@
-*quickfix.txt*  For Vim version 9.1.  Last change: 2024 Dec 16
+*quickfix.txt*  For Vim version 9.1.  Last change: 2024 Dec 27
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1424,6 +1424,70 @@
 			\ function('GenericPostCompilerCommand'),
 	\ }
 
+When "PostCompilerAction" is available, "PostCompilerActionExecutor" is also
+supported.  Its value must be a Funcref pointing to a function that always
+declares a single parameter of type string and decides whether |:execute| can
+be dispatched on its argument, containing a pending post-compiler action,
+after ascertaining the current status of |:cc| (or |:ll|): >vim
+
+	function! GenericPostCompilerActionExecutor(action) abort
+		try
+			cc
+		catch /\<E42:/
+			execute a:action
+		endtry
+	endfunction
+
+Complementary, some or all of the available "Pre*Action"s (or "*Pre*Command"s)
+may run `:doautocmd java_spotbugs_post User` in their implementations before
+|:make| (or its equivalent) to define a once-only |ShellCmdPost| `:autocmd`
+that will arrange for "PostCompilerActionExecutor" to be invoked; and then run
+`:doautocmd java_spotbugs_post ShellCmdPost` to consume this event: >vim
+
+	function! GenericPreCompilerCommand(arguments) abort
+		if !exists('g:spotbugs_compilation_done')
+			doautocmd java_spotbugs_post User
+			execute 'make ' . a:arguments
+			" only run doautocmd when :make was synchronous
+			" see note below
+			doautocmd java_spotbugs_post ShellCmdPost " XXX: (a)
+			let g:spotbugs_compilation_done = 1
+		else
+			cc
+		endif
+	endfunction
+
+	function! GenericPreCompilerTestCommand(arguments) abort
+		if !exists('g:spotbugs_test_compilation_done')
+			doautocmd java_spotbugs_post User
+			execute 'make ' . a:arguments
+			" only run doautocmd when :make was synchronous
+			" see note below
+			doautocmd java_spotbugs_post ShellCmdPost " XXX: (b)
+			let g:spotbugs_test_compilation_done = 1
+		else
+			cc
+		endif
+	endfunction
+
+	let g:spotbugs_properties = {
+		\ 'compiler':		'maven',
+		\ 'DefaultPreCompilerCommand':
+			\ function('GenericPreCompilerCommand'),
+		\ 'DefaultPreCompilerTestCommand':
+			\ function('GenericPreCompilerTestCommand'),
+		\ 'PostCompilerActionExecutor':
+			\ function('GenericPostCompilerActionExecutor'),
+	\ }
+
+If a command equivalent of `:make` is capable of asynchronous execution and
+consuming `ShellCmdPost` events, `:doautocmd java_spotbugs_post ShellCmdPost`
+must be removed from such "*Action" (or "*Command") implementations (i.e. the
+lines `(a)` and `(b)` in the listed examples) to retain a sequential order for
+non-blocking execution, and any notification (see below) must be suppressed.
+A `ShellCmdPost` `:autocmd` can be associated with any |:augroup| by assigning
+its name to the "augroupForPostCompilerAction" key.
+
 When default actions are not suited to a desired workflow, proceed by writing
 arbitrary functions yourself and matching their Funcrefs to the supported
 keys: "PreCompilerAction", "PreCompilerTestAction", and "PostCompilerAction".
diff --git a/runtime/ftplugin/java.vim b/runtime/ftplugin/java.vim
index 0fa7733..cfd25bc 100644
--- a/runtime/ftplugin/java.vim
+++ b/runtime/ftplugin/java.vim
@@ -3,7 +3,7 @@
 " Maintainer:		Aliaksei Budavei <0x000c70 AT gmail DOT com>
 " Former Maintainer:	Dan Sharp
 " Repository:		https://github.com/zzzyxwvut/java-vim.git
-" Last Change:		2024 Dec 16
+" Last Change:		2024 Dec 25
 "			2024 Jan 14 by Vim Project (browsefilter)
 "			2024 May 23 by Riley Bruins <ribru17@gmail.com> ('commentstring')
 
@@ -113,7 +113,7 @@
     endfunction
 
     " Work around ":bar"s and ":autocmd"s.
-    function! s:ExecuteActionOnce(cleanup_cmd, action_cmd) abort
+    function! JavaFileTypeExecuteActionOnce(cleanup_cmd, action_cmd) abort
 	try
 	    execute a:cleanup_cmd
 	finally
@@ -285,7 +285,7 @@
 	for s:action in s:actions
 	    if has_key(s:action, 'once')
 		execute printf('autocmd java_spotbugs %s <buffer> ' .
-			\ 'call s:ExecuteActionOnce(%s, %s)',
+			\ 'call JavaFileTypeExecuteActionOnce(%s, %s)',
 		    \ s:action.event,
 		    \ string(printf('autocmd! java_spotbugs %s <buffer>',
 			\ s:action.event)),
@@ -297,7 +297,41 @@
 	    endif
 	endfor
 
-	unlet! s:action s:actions s:idx s:dispatcher
+	if s:SpotBugsHasProperty('PostCompilerActionExecutor') &&
+		\ (s:request == 7 || s:request == 6 ||
+		\ s:request == 5 || s:request == 4)
+	    let s:augroup = s:SpotBugsGetProperty(
+		\ 'augroupForPostCompilerAction',
+		\ 'java_spotbugs_post')
+	    let s:augroup = !empty(s:augroup) ? s:augroup : 'java_spotbugs_post'
+
+	    for s:candidate in ['java_spotbugs_post', s:augroup]
+		if !exists("#" . s:candidate)
+		    execute printf('augroup %s | augroup END', s:candidate)
+		endif
+	    endfor
+
+	    silent! autocmd! java_spotbugs_post User <buffer>
+
+	    " Define a User ":autocmd" to define a once-only ShellCmdPost
+	    " ":autocmd" that will invoke "PostCompilerActionExecutor" and let
+	    " it decide whether to proceed with ":compiler spotbugs" etc.; and
+	    " seek explicit synchronisation with ":doautocmd ShellCmdPost" by
+	    " omitting "nested" for "java_spotbugs_post" and "java_spotbugs".
+	    execute printf('autocmd java_spotbugs_post User <buffer> ' .
+				\ 'call JavaFileTypeExecuteActionOnce(%s, %s)',
+		\ string(printf('autocmd! %s ShellCmdPost <buffer>', s:augroup)),
+		\ string(printf('autocmd %s ShellCmdPost <buffer> ' .
+				\ 'call JavaFileTypeExecuteActionOnce(%s, %s)',
+		    \ s:augroup,
+		    \ string(printf('autocmd! %s ShellCmdPost <buffer>', s:augroup)),
+		    \ string(printf('call call(%s, [%s])',
+			\ string(s:SpotBugsGetProperties().PostCompilerActionExecutor),
+			\ string(printf('compiler spotbugs | call call(%s, [])',
+			    \ string(s:SpotBugsGetProperties().PostCompilerAction))))))))
+	endif
+
+	unlet! s:candidate s:augroup s:action s:actions s:idx s:dispatcher
     endif
 
     delfunction s:SpotBugsGetProperties
@@ -310,9 +344,11 @@
     setlocal suffixes< suffixesadd< formatoptions< comments< commentstring< path< includeexpr<
     unlet! b:browsefilter
 
-    " The concatenated removals may be misparsed as a User autocmd.
+    " The concatenated ":autocmd" removals may be misparsed as an ":autocmd".
+    " A _once-only_ ShellCmdPost ":autocmd" is always a call-site definition.
     silent! autocmd! java_spotbugs User <buffer>
     silent! autocmd! java_spotbugs Syntax <buffer>
+    silent! autocmd! java_spotbugs_post User <buffer>
 endfunction
 
 " Undo the stuff we changed.